2016 Wilson DX3 Soft Urethane Tour Spin Performance Golf Balls - Dozen INNER MANTLE LAYER The DuPont HPF inner mantle layer provides velocity for maximum distance CAST URETHANE The soft, thin cast urethane outer cover is the most premium material available and provides exceptional spin and control on approach shots. Wilson Staff is just one of three golf ball manufacturers that uses cast urethane in golf ball design 12 Ball pack NEW DIMPLE PATTERN The new Wilson Staff 362 seamless dimple pattern results in optimized distance performance THE WORLDS SOFTEST URETHANE GOLF BALL The 3-piece 55 compression DUO Urethane is designed for the Feel player who demands tour performance spin and the softest feel